Much like a proxy, a Voxility IPIP tunnel allows you to pass traffic from your HostingFuze Network VPS including DDoS filtering to another remote destination.
Voxility IPIP tunnels allow all traffic through, not just HTTP. With a Voxility IPIP tunnel you can serve, and deliver any type of content from any type of server (audio, FTP, SSH, SCP, video, etc.).
Voxility IPIP tunneling is very handy when you want to use our DDoS filtering services to protect services that are too large to host with us (I.e. game servers, Java applications, large database driven applications, etc.).
Voxility IPIP tunneling is also the only tunneling method that OVH supports in their included kernels.
Don’t have root access for your destination server or are running a huge Windows deployment? Check out our alternative method to redirect traffic to your remote server.
Our how-to tutorial to setup a Voxility IPIP tunnel between HostingFuze Network DDoS filtered VPS IP and your remote server starts here.
Following the simple instructions below you should be able to create a Voxility IPIP tunnel in under 20 minutes.
It is possible to use Windows to create, and forward your Voxility IPIP tunnel. If you need to protect a Windows server please consider purchasing a KVM plan.
In this document we’ll only be covering a Linux Voxility IPIP tunnel configuration.
First we need to set our tunnel up.
On your HostingFuze Network VPS please execute the following commands:
echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf sysctl -p iptunnel add ipip1 mode ipip local YOUR_FILTERED_IP remote DESTINATION_SERVER_IP ttl 255 ip addr add 192.168.168.1/30 dev ipip1 ip link set ipip1 up
On the remote server you wish to protect run the following:
iptunnel add ipip1 mode ipip local DESTINATION_SERVER_IP remote YOUR_FILTERED_IP ttl 255 ip addr add 192.168.168.2/30 dev ipip1 ip link set ipip1 up
Please note the first line of each changes to mark what IP to use locally and which remotely. The 2nd line documents each end point. In a /30, 2 IP’s are usable: .1 and .2.
On your HostingFuze Network VPS, you should now be able to ping 192.168.168.2
.
For the sake of completeness, test pinging 192.168.168.1
from your destination server.
Source route entries are required to make sure data that came in via the Voxility IPIP tunnel is sent back out the Voxility IPIP tunnel.
Please execute the following commands on the destination server.
echo '100 HFNVM' >> /etc/iproute2/rt_tables ip rule add from 192.168.168.0/30 table HFNVM ip route add default via 192.168.168.1 table HFNVM
Please note that the echo command only needs to be ran once. The entry will be saved into /etc/iproute2/rt_tables until you remove it manually.
NAT is used to pass data over our Voxility IPIP and out the other end.
While it would be possible to use a KVM based VPS with a purchased /29 allocation, this guide doesn’t cover that.
On your HostingFuze Network VPS run the following command:
iptables -t nat -A POSTROUTING -s 192.168.168.0/30 -j SNAT --to-source YOUR_FILTERED_IP
On your destination server you can run either of the following commands to see if the tunnel is passing traffic properly:
curl http://www.cpanel.net/showip.cgi --interface 192.168.168.2
wget http://www.cpanel.net/showip.cgi --bind-address=192.168.168.2 -q -O -
The IP dumped should be your HostingFuze Network filtered IP.
To make things easy, we’ll forward all ports from our filtered IP to the backend server. You can change this rule to only forward certain ports if you like.
Please adjust, and run the following commands on your HostingFuze Network VPS:
iptables -t nat -A PREROUTING -d YOUR_FILTERED_IP -j DNAT --to-destination 192.168.168.2 iptables -A FORWARD -d 192.168.168.2 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT
The first rule sets up the actual port forwarding and the second rule makes sure that connections get NAT’d, and matched back properly.
At this point you should be able to connect to YOUR_FILTERED_IP
and the destination port with your application and get passed through the Voxility IPIP tunnel without issue.
You can edit /etc/rc.local
with your favourite editor of choice (or WINSCP even) and place all the commands we just ran before the exit 0
at the bottom.
Your distribution of choice (like Debian) may have hooks in /etc/network/interfaces
to bring your Voxility IPIP tunnels up at boot time but that’s outside the scope of this guide.
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